Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
  • C09J175/04—Polyurethanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
  • C08L75/04—Polyurethanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
  • C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
  • C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
  • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
  • C09J161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
  • C09J161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
  • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
  • C09J161/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
  • C09J161/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
  • C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
  • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
  • C08L83/12—Block- or graft-copolymers containing polysiloxane sequences containing polyether sequences

Definitions

• the invention relates to composite molded articles comprising cellulose-containing, glass, mineral, polymer and / or metal-containing materials, binders and at least one additive of the stated structure I and the process for the preparation of these.
• These shaped bodies is preferably carried out by hot pressing of materials glued with binders, the wetting of the materials by the binder being improved by additives.
• the manufacture of mostly compressed shaped articles shaped as composites or composites, such as oriented strand board (OSB) boards, chipboard, fiberboard, plywood or cork boards, and flocked composite foams with binders in an open or closed mold is known from numerous literature and patent publications WO 98/00464 . US 5,008,359 . US 5,140,086 . US 5,204,176 . US 3,440,189 known.
• the moldings may consist of various cellulosic materials, such as chips, fibers or granules, but also straw or flax. If appropriate, catalysts, auxiliaries and / or further additives may also be used in the preparation.
• temperatures of 0 to 400 ° C are necessary to ensure the reaction of the binder with the cellulosic material and to allow the formation of the materials to the desired final shape, such as plates. In this case, pressures of 0 - 100 bar are achieved or applied.
• the proportion by weight of the binders in the total weight of the shaped bodies is between 1 and 50% by weight, preferably between 5 and 35% by weight and in particular less than 20% by weight.
• Binders used are all types of polyfunctionalized isocyanates, typically aromatic polyisocyanates.
• aromatic polyisocyanate is polymeric diphenylmethane diisocyanate (PMDI).
• PMDI polymeric diphenylmethane diisocyanate
• various formaldehyde resins are used as binders for composite molded bodies. The most common are urea / formaldehyde, phenol / formaldehyde or melamine / formaldehyde resins and mixtures thereof.
• Small amounts of binders from renewable raw materials such as tannins, lignins or proteins are used.
• the object of the invention is therefore to provide novel composite moldings using compositions containing the modify required binder so that it comes to a better distribution of the binder on the surface, resulting in improved adhesion and minimized swelling behavior of the composite molding.
• An object of the invention are therefore composite molded bodies which have been produced using compositions which contain at least one binder and at least one surface-active additive.
• the surface-active additive may be an organic, preferably an organometallic and / or an organosilicon compound, and in particular a siloxane of the formula (I).
• the composite molded body consists of cellulose, glass, mineral, polymer and / or metal-containing materials.
• Another object of the invention is also the composition itself, containing an organic binder and at least one surface-active substance.
• the surfactant in the compositions is a siloxane of formula (I).
• the various monomer units of the components indicated in the formulas can be built up in blocks with any number of blocks and any sequence or statistical distribution.
• the indices used in the formulas are to be regarded as statistical averages.
• the composite molded article is produced using preferably 99% to 0.1% by weight, in particular 99% to 1% by weight, of a cellulose-containing material, based on the overall formulation.
• binder content in the composite molding is from 1 to 50% by weight, preferably from 5 to 35% by weight and in particular less than 20% by weight, based on the total formulation of the composite molding.
• the composite moldings according to the invention may contain further substances.
• the compositions according to the invention may contain further organic additives, surfactants and / or emulsifiers and / or solvents.
• composition of the invention contains a solvent, in particular an organic solvent, preferably a non-isocyanate-reactive solvent.
• Another object of the invention is a method for producing the composite molded article by pressing glued materials, in particular cellulosic materials.
• the method is characterized in particular by the fact that the pressing temperature at a hot pressing 0 to 400 ° C, preferably 100 to 300 ° C and most preferably 150 to 250 ° C.
• the surface-active additive is advantageously introduced into the binder and the mixture is subsequently applied by the customary methods known to the person skilled in the art, for example applied directly to the material or to the material.
• the pressure achieved during the pressing process is 0 to 100 bar, preferably 20 to 80 bar.
• the production of the composite molding is carried out on continuous (roller pressing) as well as on discontinuous (plate pressing) systems.
• the moldings are used in the form of plates, blocks, strands and beams. These are used for the production of objects of any kind, in particular for the production of furniture and furniture parts, as well as in home and interior design.
• Another object of the invention are composite moldings in the form of chipboard, OSB boards, fiberboard, plywood and / or cork boards, prepared by one of the above methods using the compositions of the invention.
• ranges, general formulas, or classes of compounds are intended to encompass not only the corresponding regions or groups of compounds explicitly mentioned, but also all sub-regions and sub-groups of compounds obtained by removing individual values (ranges) or compounds can be.
• the additives can be used as pure substances, but also as mixtures.
• additives are stirred directly into the binder and applied together with these on the shaped particles.
• the composite base material for example, the cellulosic material is presented in fiber or particulate form, mixed with the binder and then formed in a metal press.
• the percentage of the additive is based on the binder content.
• Table 2 Wetting and thickness swelling glue mixture surface tension Wet area Thickness swelling after 24h ** VM1 PMDI * 45.0 mN / m 286 mm 2 35% Mixture 1 24.5 mN / m 614 mm 2 27% Mixture 2 22.1 mN / m 774 mm 2 25% Mixture 3 27.1 mN / m 495 mm 2 24% Mixture 4 26.3 mN / m 531 mm 2 24% VM2 UF resin * 76 mN / m 124 mm 2 43% Mixture 5 23 mN / m 248 mm 2 35% * Comparative experiment without addition of a surface-active substance ** percentage increase related to the length measure
• the comparative examples VM1, the pure PDMI without an additive of the additive according to the invention and the comparative example VM2, the urethane-formaldehyde resin without further addition of an additive show comparatively low values for the wetted surface, while the inventive examples of the mixtures 1 to 5 show substantially increased wetted surfaces and also have significantly reduced surface tensions.
• the wetted surface increases at least substantially more than 50% with only 0.2 wt .-% addition of the additive according to the invention (based on the amount of binder), with mixture 1 by 115%, with mixture 2 by 171%, when mixed 3 by 73%, with blend 4 by 186%, and with blend 5 by 100% over the UF resin.
• the comparative experiments on the application without surface-active substance also show that in order to achieve the same properties of the composite body at least 15 wt .-%, preferably 25 wt .-% of binder can be saved, which leads to a cost advantage.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Reinforced Plastic Materials (AREA)
• Dry Formation Of Fiberboard And The Like (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (1)

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Citations (14)

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• 2010
  • 2010-06-11 EP EP10165613A patent/EP2287254A1/fr not_active Withdrawn
  • 2010-07-08 US US12/832,569 patent/US20110009532A1/en not_active Abandoned
  • 2010-07-08 BR BRPI1005972-5A patent/BRPI1005972A2/pt not_active Application Discontinuation
  • 2010-07-08 AU AU2010202898A patent/AU2010202898A1/en not_active Abandoned
  • 2010-07-09 CA CA2709631A patent/CA2709631A1/fr not_active Abandoned
  • 2010-07-09 MX MX2010007576A patent/MX2010007576A/es not_active Application Discontinuation
  • 2010-07-09 RU RU2010128444/05A patent/RU2010128444A/ru not_active Application Discontinuation
  • 2010-07-09 CN CN2010102293738A patent/CN101948664A/zh active Pending

Patent Citations (14)

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